In simple words: This code indicates that a person has type 2 diabetes, a condition where the body doesn't use insulin properly, and they also have gum and bone disease affecting their teeth.

Type 2 diabetes mellitus with periodontal disease. This code indicates a patient has type 2 diabetes along with co-occurring periodontal disease (gum and bone disease affecting the teeth).

Example 1: A 55-year-old patient with a history of type 2 diabetes presents with swollen and bleeding gums, loose teeth, and bad breath. Upon examination, the dentist diagnoses periodontal disease. The code E11.630 is used to represent the combined condition., A patient with poorly controlled type 2 diabetes is referred to a periodontist for evaluation of gum recession and bone loss. The periodontist confirms periodontal disease. Both conditions are coded, using E11.630 to capture the dual diagnosis., During a routine check-up, a physician notices signs of early periodontal disease in a patient with type 2 diabetes. The physician emphasizes the importance of oral hygiene and refers the patient to a dentist for further evaluation and treatment. E11.630 is used to denote the presence of both conditions.

Documentation should support both the type 2 diabetes diagnosis (e.g., elevated HbA1c, fasting glucose levels) and the periodontal disease diagnosis (e.g., clinical findings of gum inflammation, bone loss, pocket depth measurements). The link between the two should also be documented if there's a causal relationship noted.